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Evoked Potential - domain by using a Fourier Transform The...

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Auditory Evoked Potential Zijing Zhao, Wenhao Chen, Ziyang Li What is auditory evoked potential? The auditory evoked potential is the change in brain's electrical activity that follows an auditory stimulus such as a click. In the first 10 milliseconds after a brief stimulus, a series of tiny waves can be recorded. These represent the responses of the auditory nerve and the auditory pathways in the brainstem. How to get it? Record the electric field from the surface of the scalp by using Electroencephalogram (EEG) while giving a series of stimulus (click) to the subject. How to analysis the recorded datah Using EEGLAB, a toolbox of MATLAB, to do frequency analysis and gain event-related potential (ERP): EEG signals can also be changed from the time domain to the frequency
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Unformatted text preview: domain by using a Fourier Transform. The frequency spectrum of the EEG signal then shows various peaks that denote the particular rhythms in the EEG signal. The human event-related potentials can be used to study what is going on in the brain during complex psychological processes such as attending to some stimuli and ignoring others, making decisions about stimuli, understanding speech, and learning new things. In this project, we need to gain the response of the brain to certain stimulus while ignore other neural activities. What’s the application of this project? Detecting hearing impairment; sleep related research and so on....
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